http://www.roadengineering.com/

Construction Engineering, Riyadh (2026)

11/07/2025

Share you experience which one is better?

24/09/2024

What is wrong with this stone masonry

23/09/2024

Construction Engineering

Pointing in stone masonry is the process of applying mortar to the joints of stone masonry to enhance its appearance and protect it from weathering and water pe*******on. There are several types of pointing, each with distinct characteristics and uses. Here are the main types of stone masonry pointing:

1. Flush Pointing

Flush pointing is a technique where the mortar is pressed into the joint and then leveled off flush with the face of the masonry. This type of pointing provides a smooth, even finish that is aesthetically pleasing and easy to maintain. It is commonly used in modern constructions where a clean, uniform appearance is desired. Additionally, flush pointing offers good resistance to weathering since there are no recesses for water to collect.

2. Recessed Pointing

In recessed pointing, the mortar is pressed into the joint and then pressed back slightly from the face of the masonry, creating a recessed effect. This type of pointing highlights the stones, giving the wall a more textured and three-dimensional appearance. Recessed pointing is often used in historic restorations to match the original construction techniques. However, it is less resistant to weathering compared to flush pointing because the recessed joints can collect water and debris.

3. Beaded Pointing

Beaded pointing involves pressing the mortar into the joint and then shaping it with a round tool to form a bead. This type of pointing is decorative and adds a distinctive look to the masonry. The bead stands out from the surface, creating a shadow line that can enhance the visual appeal of the stonework. Beaded pointing requires a high level of skill and precision, making it more labor-intensive and costly.

4. Struck Pointing

Struck pointing is achieved by pressing the mortar into the joint and then striking it off at an angle, creating a sloping surface. The lower edge of the joint is typically recessed while the upper edge is flush with the masonry face. This type of pointing helps to shed water away from the joint, providing better weather resistance. Struck pointing is often used in external walls where protection against rainwater is crucial

5. Tuck Pointing

Tuck pointing is a decorative technique where the joint is first filled with mortar, and then a narrow strip of contrasting-colored mortar is applied on top, giving the appearance of fine joints. This method was developed to make rough or irregular masonry appear more refined and uniform. Tuck pointing is commonly used in historic buildings and structures to replicate traditional craftsmanship.

6. Weathered Pointing

Weathered pointing involves pressing the mortar into the joint and then sloping it outward, creating a weathered surface that helps shed water. This type of pointing is particularly functional, as it directs water away from the masonry, reducing the risk of water pe*******on and frost damage. Weathered pointing is suitable for both new constructions and repairs where durability is a priority.

7. V-Pointing

V-pointing is done by pressing the mortar into the joint and then shaping it to form a V-shaped groove. This type of pointing is both decorative and functional, as the V-groove helps to shed water while creating an appealing texture on the masonry surface. V-pointing is often used in ornamental stonework and façades to add visual interest.

8. Raked Pointing

Raked pointing is a technique where the mortar is pressed into the joint and then raked out to a consistent depth, usually with a square or rounded profile. This creates a shadow effect that highlights the stone blocks. Raked pointing is commonly used to achieve a rougher, more rustic texture and to emphasize the craftsmanship of the stonework.

Conclusion

Each type of stone masonry pointing serves different purposes, from enhancing the aesthetic appeal of the stonework to providing improved weather resistance and durability. The choice of pointing technique depends on factors such as the architectural style, the desired appearance, and the environmental conditions. By selecting the appropriate type of pointing, builders and restorers can ensure the longevity and beauty of stone masonry structures.

22/09/2024

Construction Engineering

Brick masonry work involves constructing structures using bricks and mortar. It starts with preparing a strong foundation to support the weight of the brickwork. Bricks are laid in a systematic pattern, usually in horizontal layers called courses, ensuring they are level and aligned. The bonding pattern, such as stretcher bond, header bond, or Flemish bond, is chosen based on structural requirements and aesthetic preferences.

Mortar, a mixture of cement, sand, and water, is used to bond the bricks together. The mortar joints should be uniform in thickness, typically about 10 mm, and fully filled to ensure a strong bond and prevent water pe*******on. Careful attention is given to the vertical and horizontal alignment of the bricks, using tools like spirit levels and plumb lines.

During construction, reinforcement may be added for extra strength, especially in load-bearing walls or areas susceptible to lateral forces. Openings for doors and windows are framed with lintels to support the brickwork above.

Proper curing of the masonry is crucial, as it allows the mortar to achieve its full strength. This involves keeping the brickwork moist for several days after construction.

Brick masonry is valued for its durability, fire resistance, and thermal insulation properties, making it a preferred choice for various types of structures.

21/09/2024

Construction Engineering
Here is the answer for the previous question.

Excessive fine material in aggregate can weaken concrete by interfering with the bond between coarse aggregate and cement paste, leading to reduced strength. It also increases water demand, affecting workability and leading to a higher water-cement ratio, which reduces durability. Excess fines can make the mix sticky, increasing shrinkage and cracking risks. For better results, wash the aggregate to remove fines, perform sieve analysis to adjust the mix, blend with cleaner aggregates, and implement quality control measures. These steps ensure the concrete mix achieves desired strength, workability, and durability, meeting industry standards.

20/09/2024

Do you recommend this type of aggregate? Why and where?

19/09/2024

Why the septic tank top level if above finish ground level?
Construction Engineering

The top level of a septic tank is typically designed to be above ground level for several important reasons, including the effective drainage of excess water to a soak pit. Here are detailed explanations for this design choice:

Facilitating Gravity-Driven Flow: Positioning the septic tank above ground level utilizes gravity to naturally direct the flow of effluent from the tank to the soak pit. This reduces the need for mechanical pumps, which can fail or require maintenance.

Preventing Flooding: An elevated septic tank reduces the risk of groundwater or surface water entering the tank during heavy rains or flooding. This prevents the system from becoming overwhelmed and ensures it functions properly.

Easier Access for Maintenance: Having the top of the septic tank above ground level provides easier access for routine maintenance, inspections, and pumping. This allows for quicker and more efficient servicing, reducing the likelihood of system failures.

Minimizing Soil Contamination: By ensuring the effluent flows downhill to the soak pit, the risk of effluent backing up and contaminating the soil around the septic tank is minimized. This helps maintain a sanitary environment and protects groundwater quality.

Improving Ventilation: An elevated tank design can improve the ventilation of the system. Proper ventilation is crucial for the decomposition process within the tank and helps reduce odors.

Simplifying Installation: Installing the septic tank slightly above ground level can simplify the overall installation process, particularly in areas with high water tables or rocky soil, where excavation may be challenging or expensive.

Enhancing System Longevity: By protecting the septic tank from potential groundwater infiltration and reducing mechanical dependencies, an elevated design can contribute to the longevity and reliability of the septic system.

Compliance with Regulations: Many local building codes and regulations require septic tanks to be installed above ground level to ensure proper operation and environmental protection. Adhering to these regulations is essential for legal compliance and public health.

Preventing Sediment Accumulation: Elevating the septic tank helps prevent the accumulation of sediment and debris at the tank's inlet, ensuring a smoother flow of wastewater into the tank.

Facilitating Emergency Overflow: In cases where the septic tank becomes overloaded, an above-ground tank allows for a more controlled overflow, directing excess effluent to the soak pit or other designated areas, preventing damage to the surrounding property.

By addressing these factors, the design choice of having the top level of a septic tank above ground level ensures efficient, safe, and reliable operation of the septic system, protecting both the environment and public health.

18/09/2024

This is a hand wash facility normally for schools.
Hand wash facilities in schools are essential for promoting hygiene and preventing the spread of illnesses among students and staff. Effective hand wash facilities should include several key features and considerations:

Ensuring accessibility by placing hand wash stations at convenient locations such as near restrooms, cafeterias, and playgrounds, making it easy for students to access them throughout the day.

Providing sufficient numbers of hand wash stations to accommodate the student population, preventing long wait times and encouraging regular hand washing.

Equipping stations with clean, running water, soap, and hand-drying options such as paper towels or air dryers to ensure effective hand hygiene.

Ensuring proper drainage systems to avoid water pooling around the hand wash stations, which can lead to slips, falls, and the growth of bacteria or mold.

Incorporating age-appropriate designs such as lower sinks for younger children and easy-to-use faucets and soap dispensers to encourage independent hand washing.

Regularly maintaining and cleaning the facilities to ensure they remain functional, clean, and stocked with necessary supplies like soap and paper towels.

Promoting hand hygiene education by displaying posters and signs that demonstrate proper hand washing techniques and the importance of hand hygiene in preventing illness.

Implementing touchless technology, such as sensor-operated faucets and soap dispensers, to minimize contact and reduce the spread of germs.

Ensuring an adequate supply of hand sanitizers in areas where hand wash stations may not be immediately accessible, providing an alternative for maintaining hand hygiene.

Providing training for staff and students on the importance of hand washing, including proper techniques and the recommended frequency, to instill good hygiene habits.

Monitoring and evaluating the effectiveness of hand wash facilities and hygiene practices, making improvements as needed to ensure a healthy school environment.

By incorporating these features and practices, schools can create a safe and hygienic environment that promotes the health and well-being of students and staff.

17/09/2024

Construction Engineering

A soak pit, also known as a soakaway or leach pit, is an underground structure used to manage the effluent from a septic tank. It facilitates the percolation of liquid waste into the ground, thereby helping to treat and dispose of it. Here's how a soak pit works and what it involves:

Excavating a pit, typically 1.5 to 3 meters deep and 1 to 2 meters in diameter, based on the volume of wastewater and soil absorption capacity.

Lining the pit with a layer of stones, bricks, or concrete rings to support the structure while allowing wastewater to seep through.

Filling the pit with layers of gravel, coarse sand, or other porous materials to enhance filtration and promote the dispersion of the effluent into the surrounding soil.

Connecting the septic tank's outlet to the soak pit via a perforated pipe to ensure the even distribution of wastewater.

Covering the top of the pit with a concrete slab or other solid cover to prevent debris, animals, and surface water from entering the pit while allowing for access and maintenance.

Ensuring proper location of the soak pit, away from water sources like wells, boreholes, or drinking water supplies to prevent contamination. It should also be situated at a safe distance from buildings to avoid structural damage.

Regularly maintaining the soak pit by inspecting for blockages, sludge build-up, and ensuring the percolation rate remains effective. Periodic emptying of accumulated sludge may be necessary to maintain efficiency.

Considering soil type, as sandy or loamy soils are ideal for soak pits due to their high permeability, whereas clayey soils may require additional design considerations or alternative solutions.

Implementing these steps ensures that the soak pit effectively manages wastewater from the septic tank, promoting environmental protection and public health by preventing groundwater contamination.

16/09/2024

Water well head protection involves a series of measures and practices designed to safeguard the water supply from contamination and ensure the longevity and quality of the well. These measures include:

Establishing a wellhead protection area by determining the land area surrounding the well that directly contributes water to it. This area is crucial for preventing contaminants from reaching the water supply.

Maintaining the wellhead by ensuring it is properly sealed, with no cracks or gaps in the casing, and the well cap is securely in place to prevent surface contaminants from entering the well.

Implementing regular inspections and maintenance schedules to check for any potential issues with the well structure, water quality, and surrounding land use.

Controlling land use activities around the wellhead, such as limiting the application of fertilizers, pesticides, and other chemicals, as well as preventing the installation of septic systems and other potential sources of contamination within the protection area.

Monitoring water quality by conducting regular testing for contaminants such as bacteria, nitrates, and other pollutants to ensure the water remains safe for consumption.

Educating the community and well owners about the importance of wellhead protection and the steps they can take to minimize risks to their water supply.

Properly abandoning unused wells to prevent them from becoming pathways for contaminants to reach the groundwater.

Implementing emergency response plans to address potential contamination incidents swiftly and effectively.

These measures help maintain the quality and safety of drinking water drawn from wells, protecting public health and the environment.

10/09/2024

Access ladder 🪜 for septic tank. Rate this one from 1 to 5.
This a galvanized steel ladder.
Type in the comment better than this one.

10/09/2024

How is this color for school 🏫 facilities?

Construction Engineering

11/07/2025

24/09/2024

23/09/2024

22/09/2024

21/09/2024

20/09/2024

19/09/2024

18/09/2024

17/09/2024

16/09/2024

10/09/2024

10/09/2024

Address

Website

Alerts

Shortcuts

Share